At two Swedish music festivals this weekend in Karlstad and Norrkoping, police received more than 40 reports of rape and sexual assault from "foreign individuals."
Police faced a backlash earlier this year for failing to inform the public of widespread sexual assaults against teenage girls at a Swedish music festival a year ago, which came to light in January after a series of New Year's Eve sexual assaults and robberies linked to refugees in Cologne, Germany.
Swedish police inspector Leif Nystrom said there were 32 reports of attacks by "young men" at a three-day festival in Karlstad. The youngest victim was 12 years old.
In Norrkoping, police said they were investigating five alleged rapes and more than a dozen alleged sexual assaults at the Bravalla Festival.
Police initially described the suspects as "foreign young men," the UK Telegraph reported. One 15-year-old girl told a local newspaper "foreign youths" molested five of her six friends.
After playing in Norrkoping, British rock band Mumford & Sons posted a note on their Facebook site saying they were "appalled ... and gutted by these reports" of rape and sexual assault.
The band said Tuesday they would not play Bravalla again unless police and organizers could assure them that they are "doing something to combat what appears to be a disgustingly high rate of reported sexual violence."
Swedish Prime Minister Stefan Lofven said the situation was "totally unacceptable."
"We are in the process of reviewing them," he said in a speech at a political seminar. "It's also important that we continue to ensure that police, prosecutors and other officials are better equipped to investigate such crimes and actually catch the perpetrators."
"We want to catch the suspects because we need to talk to them," Nystrom said. "The number of such cases has increased slightly since last year, but I'm really not sure if this is a common problem at festivals."